AFAIK, Adobe isn't supported anymore BlazeDS (it is now an Apache project in incubation phase)... I understand that your project is almost ready for production and that it is not time to switch to another framework but did you consider using GraniteDS? It has many more features than BlazeDS, its community is very active and you can get professional support.

I'd like to reply to Franck W's comment. Instead of moving BlazeDS to Apache we just made a new release of BlazeDS available on http://sourceforge.net/adobe/blazeds/wiki/Home/. There are dedicated forums for BlazeDS which are monitored by the Adobe team. Professional, enterprise support is provided for Data Services by Adobe. You can switch to Data Services anytime without code changes.